Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Preparation method of aramid nanofiber reinforced sweet sorghum residue composite material

A technology of nanofibers and composite materials, applied in the field of new composite materials, can solve the problems of low mechanical strength, improve mechanical properties, realize high-value utilization, and increase the use value

Active Publication Date: 2021-07-20
SHANDONG UNIV OF TECH +1
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, sweet sorghum slag is used as silage, paper-making raw materials, and composite materials. However, the mechanical strength of sweet sorghum slag wood-plastic composite materials is low, and the large-scale and effective treatment of residues is still an important challenge for the development of the fuel ethanol industry.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of aramid nanofiber reinforced sweet sorghum residue composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] 1) Crush the sweet sorghum slag to 140 mesh, put it in a 60°C oven and dry it for 24 hours to reduce the moisture content to 2%;

[0043] 2) Treat sweet sorghum slag with dimethyl sulfoxide / potassium hydroxide system, the mass volume ratio of fiber and solution is 1:10, stir at room temperature for 24 hours, wash the mixture until neutral, and obtain modified sweet sorghum slag after drying .

[0044] 3) Weighing raw materials according to parts by weight: 40 parts of modified sweet sorghum slag, 60 parts of high-density polyethylene, and 5 parts of polyethylene wax, and fully mixed to obtain a uniform mixture.

[0045] 4) Put the well-mixed materials into a conical twin-screw extruder for melt blending, and extrude them into a barrel. The extruder speed is 60r / min, and the extrusion temperature and barrel temperature are both 175°C.

[0046] 5) The mixture is put into a micro-injection molding machine through a barrel for injection molding to obtain the required mater...

Embodiment 2

[0048] 1) Crush the sweet sorghum slag to 140 mesh, put it in a 60°C oven and dry it for 24 hours to reduce the moisture content to 2%;

[0049] 2) Wash the aramid thread three times with ethanol to remove surface impurities, and dry it in a 60°C oven for 24 hours;

[0050] 3) Prepare a 2 mg / ml aramid nanofiber solution using dimethyl sulfoxide / potassium hydroxide system, stir at room temperature for 24 hours, and then freeze-dry the obtained homogeneous mixture at -80°C for a freezing time of 24h, obtain freeze-dried aramid fiber nanofiber;

[0051]4) Weigh raw materials by weight: 40 parts of unmodified sweet sorghum slag, 50 parts of high-density polyethylene, 10 parts of freeze-dried aramid nanofibers, and 5 parts of polyethylene wax, and fully mix to obtain a uniform mixture.

[0052] 5) Put the well-mixed materials into a conical twin-screw extruder for melt blending, and extrude into the barrel, the speed of the extruder is 60r / min, and the extrusion temperature and ba...

Embodiment 3

[0055] 1) Screen 140-mesh sweet sorghum slag and put it in a 60°C oven to dry for 24 hours to reduce the moisture content to 2%;

[0056] 2) Wash the aramid thread three times with ethanol to remove surface impurities, and dry it in a 60°C oven;

[0057] 3) A 2 mg / ml aramid nanofiber solution was prepared using a dimethyl sulfoxide / potassium hydroxide system, and stirred at room temperature for 24 hours.

[0058] 4) Put 7 g of sweet sorghum slag in 500 ml of aramid nanofiber solution, stir at room temperature for 72 hours, so that sweet sorghum slag is evenly dispersed in the aramid nanofiber solution, the mixture is washed with water until neutral, and dried in an oven at 60°C. The sweet sorghum slag aramid fiber nanofiber hybrid is obtained.

[0059] 5) Weigh raw materials by weight: 50 parts of sweet sorghum slag and nanofiber hybrid; 50 parts of high-density polyethylene; 5 parts of polyethylene wax, fully mixed at room temperature to obtain a uniform mixture.

[0060] 6...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a preparation method of an aramid nanofiber reinforced sweet sorghum residue composite material, which adopts a dimethyl sulfoxide / potassium hydroxide system to pretreat sweet sorghum residues and aramid threads, and utilizes a bio-based material preparation technology to produce the composite material with good mechanical strength, thereby widening the application way of waste sweet sorghum residues. The comprehensive utilization rate of the sweet sorghum residues is increased, products with high additional value are produced, the mechanical property of the sweet sorghum residue wood-plastic composite material is effectively improved, the utilization value of the sweet sorghum residue waste is increased, and high-value utilization of the fuel ethanol industrial waste sweet sorghum residues in the aspect of materials is achieved.

Description

technical field [0001] The invention belongs to the field of new composite materials, and in particular relates to a method for pretreating sweet sorghum slag and aramid yarn with a dimethyl sulfoxide / potassium hydroxide system to prepare aramid nanofiber-reinforced sweet sorghum slag / high-density polyethylene composite material method. Background technique [0002] As an energy crop, sweet sorghum has a high sugar content in its stalks, which can be used to produce fuel ethanol through solid-state fermentation to solve the problem of energy shortage. However, a large amount of waste residues—sweet sorghum residues—are produced in the industrial production of fuel ethanol, and most of the residues are discarded as wastes, resulting in a great waste of biomass resources and serious environmental pollution. Although sweet sorghum slag is a kind of industrial waste, it still contains high cellulose, hemicellulose and lignin content, its resource utilization value is high, and ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C08L23/06C08L97/02C08L77/10C08J5/06
CPCC08J5/06C08J2323/06C08J2497/02C08J2477/10C08J2423/06
Inventor 蔡红珍韩祥生卢文玉于文凡刘翠翠
Owner SHANDONG UNIV OF TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com